Multiple watermarking using hadamard transform

Authors:
Haifeng Li;Shuxun Wang;Weiwei Song;Quan Wen
Affiliations:
College of Communications and Engineering, Jilin University, Changchu, China;College of Communications and Engineering, Jilin University, Changchu, China;College of Communications and Engineering, Jilin University, Changchu, China;College of Communications and Engineering, Jilin University, Changchu, China
Venue:
WAIM'05 Proceedings of the 6th international conference on Advances in Web-Age Information Management
Year:
2005

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Abstract

In this paper, a multiple watermarking algorithm is proposed which is based on Hadamard transform. Readable watermarks are inserted into Hadamard transform coefficients using quantization. The pseudo-radon permutation is used to enhance the security and robustness of the watermarks. Experimental results showed that the proposed algorithm is invisible and robust to signal processing and geometrical attacks.